/**
 * Copyright 2019 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { promisify } from 'util';
import { brotliCompress } from 'zlib';
import { promises as fsp } from 'fs';

import glob from 'glob';
import filesize from 'filesize';

const globP = promisify(glob);
const brCompress = promisify(brotliCompress);

(async function() {
  const paths = await globP('build/iife/*.js');
  const entryPromises = paths.map(async path => {
    const br = await brCompress(await fsp.readFile(path));
    return [path, filesize(br.length), br.length];
  });

  for await (const entry of entryPromises) console.log(...entry);
})();
